Buffing compositions



Patented Sept. 20 1949 Daniel Gray, Sherrill, N. 1L;jassignor'to oneidwLtd., Oneida, N. Y, a corporation'of New York" No Drawing. ApplicationAugean an," Serial No. s94;1;51

' ThiS invention relates to bufiing compositions, and morev particularlyto liquid bufiing compositions in which the liquid is water.

' The commercial polishing andbuffing of stainless steel, nickel steel,silver and other metals, is ordinarily accomplished by using suitableabrasive powders held together in bar form by means of abin'der. The baris held against a bufiing wheel to transfer some of the abrasive to thewheel, and the work is polished v or bufied by holding it against thewheel. Thebinder used is usually a mixture of tallovv and stearic acidand may, if desired, contain waxes or' petrolatum. The amount of binderby Weight ranges from 10% to 35 and it is -solidat ordinarytemperatures.Liquid abrasives "or bufiingf compositions are also known andordinarily'"consistof a suitable abrasive suspended in oily-mediumf Adifliculty with-thebar -oompoundis that a considerable'duantity' ofabrasive is used to accomplish a given amount 'of'p'olishing or bufling,while the liquid abrasives hitherto used cause difi iculty due 'tosettling of the abrasive, and require considerable effort to remove themfrom the work due to the oily nature of the suspending medium; 7

It is an object of this inventio to prepare a liduid 'abrasiveorbuflingcomposition which has superior abrasive ac'tionL-A furtherobject is to preparea liquid abrasive or buffing composition whichcontains the abrasive permanently and evenlydistributd andwhichi'seasily removed from the work polished or bufiedf Still another object isto prepare 'an' abrasive or buffing composition having a water base; andwhich has markedadvantages in economy over bufling compositions now incommonuse; and is clean'and safe: to' use from"th'po'intof View of theoperator."

These and other objects will be describedin the followi'ng disclosure.

Briefly, this invention relates to a bufling composition containing asubstantiallywater-soluble substantially non-volatile amine salt of afatty acid, and an abrasive. this composition, or. before use,sufficient water is added to give the product the proper consistency.

It has been found that by. suspending theabra sive in 'a waterlmedium abetter-polishing and buifing 1 action is secured. It also extends theWheelilife since the, temperature reached" is ap- 'parently lessthanlthat. whenthe'abrasive is suspended or containedin oil or wait.Since the employment of an abrasive inwater appears to be. aniuch morefiicint use of the abrasive, a great deal less is required to provide-a'given amount of polishing. A comparison of use during a 9-hour day ofa conventional bar compound and the liquid buifing composition of thisinvention according to Example I follows:

During preparation of;

:5 13.75 lbslused 1 "1513 Compound Liquid Bufiing Composition 3 lbs.used 550.0775 perlb.. 1 I $.03perlb $1.066 total cost of abrasive $.09total oostof abrasive Quality of bufied surface: Good- Qoalicty ofbuffed surface: Excel- The wheerlife-whom using the liquid "bufiingcomposition is about twice as long'as' that'when thegba'r compound isused.

The amine used maybe aromatic, cyclic, arale if, kyl;..or a1kyl..,.The,prefer1ied..acid employed to 1 5" form the salt .is a, member. ofthe fatty acid series; 'Itmay be asaturated fatty acid such as stearic,or. an unsaturated.fattyHacidMsuch as.

oleic, though in. general the salts of unsaturated fatty acids are more'w'atr'solubl'e 'tharrtliose 20 were corresponding saturated acids.Although the' mono'-';"'di f or tri salt of the aminefmay be employed,the mono-salt has beenfound entirelys'ati'sfa'ct0ry. 1

. *Thevolatilityof'the'salt is important. For

example, soaps such' as anfinonium-stear'ate are not satisfactorybecause under bufiing conditions sufficient heat is developed. tovolatilize ammonia leaving stearic acid to' precipitate upon the workandthe Wheel. Salts resulting fromthe interaction of 16W molecular"Weight all'iline s' fan'df 16W moleblllli Weight adds ab'ecaiiseoreicessiv volatility under 'bufingi lam-weight" a'o'ids such'as-thatwhich results from the-reaction of octadecylamine andstearicacidare too water insoluble for the purposes of this invention.---The- -'amines useful in this invention include primary amines such asethylene diamine,;

.cedure-"i's not recommended.

-111 the form in which the liquid abrasive is used ,1 it must containsuflicient water to provide a'fiuidree-flow ng composition, yet'itmust-n t be 'dilute enough to permit the abrasive to precipitate Itas-been found that-' suchfl oo'r'npos'ition' isj produced ivvhe'n foreaich gram' of salt nom rour to ten grams of water are used and fromfive to I ten grams of abrasive.

The following examples are given to illustrate compositions included bythis invention;

usually unsatisr EXAMPLE 1'. The following quantities of ingredientswere employed' to make" agood buffing' con'ipo'sition in accordance"with this invention?- The triethanol amine was dissoiveairi watr and anequimolar amount of stearic acid"was' added, with stirring at 160 F.,until a 'unifoi m 7 EXAMPLE II Following the same general procedure abuffing composition containing. the following materials was prepared:

Grams" Stearic acid 200 I TritorrsB 11.75 Water a"; is n s 1,800"-lllomeshca-rborundum 2,000" Rouge .100

' 1 Benz'yTtriinthy'l ammonium hydroxide. The polishing action of thecomposition was ex: cellent, and the composition showed substantially nosettling on longstanding.

The procedure given in the first example-was followed in preparingthe-compositions-of this and the succeedingexamples. I

EXAMPLE III- A'buffijng composition was prepared using GramsSteari'cacid; 23 Morpholine 7- Water" 250' eddrn'e'sh car'borundum 2'00Rouge; I

The composition gave entirely satisfactory .bumng actionandmaintainedthe abrasive in-suspensiorr well.

In place of'the' stearic acid shownabove, 'oleic acid has been usedeffectivelyinpreparing similarbuffing compositions? The producti-s'thinner, but has-goodsuspending power and has good bufiing qualities.Othersatisfactory.non settling bufl ng compositions have been prep aredbyfollowing the procedure of thepreceding examples-in accord-: ance-withthe present invention byusing,=:in placef. the amines andacids shown'above,-stearic acid and diethanol amine-,and linoleicaoidand piperidine.

The amine salts mayofcoursebepreparedsome time previously. or maybeobtained-already prepared- If it is desired, as-for purposes-of savingsh-ipa ping weight, I water a may be added-at= the point of userather-thanaat the place-of preparation: It is necessary onlytothoroughly incorporate-the 4 abrasive with the amine salt. Thesimplest manner is to mix mechanically the two materials withoutaddedwater. Any intermediate amount of water may,- oi. cours'eg beadded.* It may, for instance, be desirable to ship a paste which may bemore readily diluted than the dry ingredients.

The bufiing composition of this invention, properly diluted' as shown inthe examples, may be applied; as bya spray gun, either directly onto -the -worl or upon the wheel, as desired. Other methods, such as paintingthe liquid onto the workor'wheel, may be used.

Anyof the various abrasives useful for buffing m ay=besuspended in thecomposition described above. Typical abrasives include Tripoli powder,chromic oxide, iron oxide, Carborundum, silica, etc. These abrasives 1as usedherein are of a fineness appropriate 'to the type of buffing'to'be performed and the "nature and material of the surface to bebuffed.

I claim; I 1. A stable, substantially non-separating liquid buffingcomposition consisting ofa free-flowing water solution of an. amine saltof a higher -fatty acid, said salt being substantially non-volatileunder bufiing conditions, the ratio of water to said saltbeing not'morethan-about I011, and an abrasive present in an amountof- 5f-10 times-thew'i'ghtfof said salt; said abrasive bin'g perms-- nentlysuspended insaid solution;

2L The composition according to claim 1 wherein the fatty acid isstearic acid. v

31 The composition according to claim 1 wherein the amine is asecondaryamine.

4. The composition according to claim 1 wherein the amine is a tertiaryamine.

5'. The composition'according toclaim 4 wherein the iatty acid isstearic acid and the amine is benzyl trimethyl ammonium hydroxide.

The,composition according-to claim 4- wherea in the fatty acid isstearic acid and the amine is morpholine. I

7. The composition according to claim i' where'- in; the fatty acid isstearic acid and the animals triethanol amine. H

8.: The composition according to cl aim '7 where inthe weight ratio ofstearic acid to trietha-nol amine 2 1. I

9; a A; stable, non-separating; liquid bufling composition consisting.of triethanol- -a-mine-';monostearate in solution in from four, totentimes its weight of water, and an abrasive in anamountof five to'tentimes the weight of said -triethanol amine monostearate permanentlysuspended-in said solution. i

DANIEL'GRAY.

' aarsasscsscrrsn The following referen'cesar'e corecard-m me file.0f'-thl$ patentt UNITED sums-PATENTS" Number Name Date F 7 1,246,996."Pieifer Novr20, 191 1,327,648 Wesson Jan: 13,1920 1,6691596 Browne May15,1'928 2,078,8'16 .Hem'iessey" Apn'. 21,1937

' 7 OTHER REFEREN ES? Emulsions? Carbide &-Carbon-GhemicaPCQrn;

Jul oai. g l a

